The heart of the ER Competition FMIC is the massive 20"x11"x3" (26"x11"x3" with end tanks) featuring our famous high density bar and plate intercooler core. It features 660 cubic inches of very efficient high density bar & plate core (35% larger) versus the factory 425 cubic inches of less efficient tube & fin core. Through extensive testing of different types of intercooler cores (tube & fin, bar & plate) we developed our own high density bar and plate core. What's different about our bar and plate core you ask? Fin density. Why is this important? The fins are the main heat transfer surface. More fin density = more actual surface area. What does this mean in the real world? Most quality intercooler cores utilize around 12-14 fins per square inch. Cheap quality oversea cores utilize around 8-10 fins per square inch (some even lower) which explains why they perform so poorly even though a large core is utilized. Our Evolution Racewerks cores are 18-20 fins per square inch. What this means is that compared to a cheap overseas core, we can get the same efficiency in roughly half the core size. Now imagine if they're the same size!